Asteroceras stellare, the true star ammonite, is an extinct species of cephalopod belonging to the Ammonite subclass and to the family Arietitidae.Biolib
These fast-moving nektonic carnivores lived during the lower Jurassic period, around 196.5 to 189.6 million years ago.The Paleobiology Database
Description Asteroceras stellare has a shell reaching a diameter of about .
Distribution Fossils of this species may be found in the Jurassic of Germany, Hungary and United Kingdom.
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